How to reduce and optimise the iOS App Size?

Ever wondered how your iOS app size is calculated. In this blog, we will see how I measured one of my apps and optimised its size.

How we can check our app size

1. App Store

(for an already published app, we can easily get from iTunes link for universal app size and especially using iPhone/iPad App Store)

2. From your iTunes Dashboard

(If the app is submitted and processed by Apple in AppStore Connect)

3. With the help of Xcode archive, we can get an approximate size of the app before submitting to the Apps store connect

How to check approximate App store size of app in Xcode

Note: This is not the final size. It may be larger in the app store when the app is approved and published. That is because the .ipa file submitted to iTunes will be processed with DRM by Apple. DRM encrypts the .ipa file to prevent app piracy & again recompressing the .ipa file. Apple’s DRM is known as FairPlay.

Why App Size is important?

1. Users want to download the app in Cellular Connection (you cannot be sure all our users will be in WiFi while downloading/updating the app)
2. Keeping the app size slimmer increases user retention.
3. A lengthy ‘time to first play’ could turn the user on edge & make them sigh before even they experience your mobile app. And a user’s device may have an extremely small amount of disk space.
4. When you can save user’s space and environment why not 😜

This article is updated and moved to my website here 😀 😀 😀